Revolution counter actuator



Nov. 16, 1948. .1. MOODY 2,453,926

REVOLUTION COUNTER ACTUATOR Filed April 21, 1945 4 Sheets-Sheet 1INVENTOR. JOHN L. M0007 AT RNEY.

Nov. 16, 1948. J. L. MOODY 2,453,926

REVOLUTION COUNTER ACTUATOR Filed April 21, 1945 4 Sheets-Shet 2INVENTOR JOHN L. Mooo ATTORNEY FII3 E Nov. 16, 1948. J. L. MOODYREVOLUTION COUNTER ACTUATOR 4 ShetsSheet 3 Filed April 21, 1945 INVENTORJOHN L. Mooo A TORNEY Nov. 16, 1948; J. L. MOODY I 2,453,926

REVOLUTION COUNTER ACTUATOR 1 Filed April 21, 1945 4 Sheets-Sheet 4 m' H[h INVENTOR. JOHN L MoooY ATTORNEY.

FIIE E Patented Nov. 16, 1948 REVOLUTION COUNTER ACTUATOR John L. Moody,Oakland, Calif., assignor to Friden Calculating Machine 00., Inc., acorporation of, California Application April 21, 1945, Serial No.589,628

4 Claims.

This invention relates to calculating machines and particularly to therevolutions counter mechanism therefor.

The invention will be disclosed as embodied in a calculating machine ofthe type disclosed in the patents to Friden, No. 2,229,889, and Number2,388,209 having a revolutions counter control of the type disclosed inthe patent to Friden, No. 2,294,111.

The object of the invention is to provide an improved means forimparting movement to the revolutions counter actuator.

In the drawings:

Figure 1 is a vertical, longitudinal section through the calculatingmachine showing the revolutions counter and the actuator therefor.

Figure 2 is a vertical, longitudinal section through the portion of themachine in which the improved motion transmitting mechanism for therevolutions counter actuator is located. The section is taken asindicated by the line 2 2 in Figure 4.

Figure 3 is a detail of part of this mechanism. The section is taken asindicated by the line 3--3 in Figure 4.

Figure 4 is a plan view of the mechanism taken as, indicated by the linel,4 in Figure 2.

Figure 5 is a detail view of parts in Figure 4 with the revolutionscounter actuator removed.

Figure 6 is a detail view of the motion transmitting cam.

Figure 7 illustrates the driving gear train. The View is taken asindicated by the line 'l--| in Figure 2.

Figure 8 shows a geneva therefor. The view is taken as indicated by theline 8--8 in Figure 2,

Figure 9 shows. a sign control mechanism for the revolutions counter.

Figure 10 is a vertical section taken as indicated by the line |0-||l inFigure 9.

As disclosed in the patent to Friden, No. 2,229,889, the keyboardincludes numeral keys, one of which is shown at in Figure 1, which maybe selectively operated to differentially adjust selector gears 2| onsquare shaft 22 so that upon rotation of the main drive shaft 23,actuator shafts 24 having actuators 25 thereon will be rotated to turnshaft 22 the differential amount. The rotation of shaft 22 istransmitted through bevel gear 26 or 21 to bevel gear 28 on numeralwheel shaft 29 having numeral wheel 39 thereon. Bevel gears 26 and 21are interconnected by means of a sleeve 3| which is slidable on theshaft 22. Bail 32 rotatable about a shaft 38 serves to adjust thereversing gear 26, 2.1 to

, 2 cause the differential movement of shaft 22 to be transmitted tonumeral wheel 39 additively or subtrac-tively.

As explained in detail in the patent to Friden, No. 2,388,209, therevolutions counter comprises a series of numeral wheels 40, eachnumeral wheel having a gear 4| and a notched disc 42 movable therewith.The numeral Wheel actuator comprises an actuator tooth 43 rotatableabout the axis of the shaft 44 extending transversely of the machine.Extending parallel with the shaft 33 are two rods 45, 46 which aresecured at their ends in plates, one of which is shown at 41 in Figure1, Which plates are secured to the shaft 44. Tooth 43 is urged by aspring 48, secured to the rod 45, in a clockwise direction about theaxis of shaft 44, and its motion relative to the plate 41 is limited bythe engagement of an arm 49 with rod 45.

The actuator tooth 43 is located in the first ordinal position and isadapted to cooperate with whichever gear 4| is opposite thereto,depending on the position of the carriage 39 in which the revolutionscounter numeral wheels 49 are located. For every cycle of operation ofthe drive shaft 23, the tooth 43 has imparted thereto a motion in asubstantially rectangular path. This motion is obtained by alternatelyoscillating and reciprocating the shaft 44. The oscillatory movements ofthe shaft are utilized to engage the tooth 43 with the gear 4| and todisengage the tooth therefrom while the reciprocatory movements of theshaft are utilized for causing the tooth 43 to rotate the gear 4|. Inorders other than the first order, similar actuator teeth are providedwhich are connected by a sleeve to a control arm 50 which cooperateswith the notched disc 42 in the next lower order to control transferoperations. Additive or subtractive registration on the revolutionscounter is determined by the direction of axial movement of the shaft 44at the time the tooth 43 is in engagement With the gear 4|. Thestructure so far described is shown in detail in the patent to Friden,No. 2,388,209. However, in the present application the mechanism has adifferent mode of operation in that the actuator normally occupies ahome position situated at a mid point on its rectangular path. Referringto Figure 1, the

. actuator tooth, 43 when at rest in its home position is disposed inthe same vertical plane as the axis of the gear 4| and the tooth 43 isdisposed opposite the tooth at bottom dead center on the gear 4|. Aswill presently be described, when movement is imparted to the. tooth itis first;

moved laterally in one direction or the other to dispose it opposite atooth space in the gear 4! and is then moved into the tooth space toengage the gear after which it moves tangentially with respect to theassociated gear ll to rotate the latter. At the conclusion of thisactuation the tooth 43 is withdrawn from the tooth space and finallyreturned to its original home position. This motion is obtained byoscillating and reciprocating the shaft A l by means which will now bedescribed in detail. The right end of the shaft 44 (Figure 2) hassecured thereto the socket member of a ball and socket joint, ballmember 52 of which is secured to a plate 53 attached to an arm Ed whichhas a slot 55 (Figure 4) at the forward end thereof engaging pivot 56secured in the frame member 51 so that the arm 5c is adapted to beoscillated about the pivot 56, also to be reciprocated axially of theslot 55. The rear end of the arm 5 has an aperture 58 therein, in whichis disposed a cam 60. As shown in Figure 6 the cam is in its full cycleposition and, in order to centralize the cam in this position, it hasrotatable therewith a centralizer cam til having depressions E2, iii-ito receive rollers M, 65 (Figure 5) on arms 66, Bl pivotally mounted at68, 69 (Figure 4) and interconnected by a spring it.

Gain 69 is so designed that upon rotation thereof, the ball 52 (Figure5) will traverse a rectangular path ll. As shown in Figures 1 and 5 theparts occupy their normal position at rest and during each revolution ofthe cam (ill the ball 52 moves around the path it and back to itsoriginal position. The direction of travel of the ball along thisrectangular path depends upon the direction of rotation of the cam 6d.The cam Ell is so contoured that movement of the ball part of thefollower 54- will, through its socket connection ill with the shaft 14,cause alternate reciprocation and oscillation thereof. For example, ifthe ball 52 traverses its path 'H in a counter-clockwise direction (Fig.5), the shaft 4 1 will first be shifted axially to the left, then rockedclockwise (Fig. 2) to engage the actuator tooth 3 with the gear 4!, thenshifted axially to the right to rotate the gear, then rockedcounter-clockwise to withdraw the tooth 43, and finally shifted axiallyto the left to complete the cycle of movement. Thus, the socket member5i serves kinematically as a crank arm by which the shaft M isoscillated, and serves also to reciprocate the shaft axially.

The means for rotating the cam 39 comprises a shaft 12 (Figure 2)connected by bevel gears 13 to the main drive shaft 23. A mutilated gearM (Figures 2 and '7) secured to shaft 12 rotates a pinion E5 on squareshaft 79. Geneva wheels 'i'l (Figure 8) and E8 on shafts "i9 and l2,respectively, position and lock the shaft 16 against rotation exceptduring the time the teeth of the mutilated gear M are in engagement withthe teeth of the pinion 15. The rotation of the shaft 16 (Figure 2) istransmitted to a bevel gear 19 by engaging either of bevel gears 89, illtherewith. Gears St and iii are interconnected by a sleeve 82 slidableon shaft 16 and adapted to be adjusted by an arm pivoted at and having aflange 95 disposed between the gears fifi and 8!. The gear 19 (Figure 3)is secured to the lower end of a shaft 85 suitably supported in theframe and having secured to its upper end the cams 69 and ti. It willtherefore be seen that depending upon the adjustment of the arm 83(Figure 2) cam 60 will be rotated in, one direction or.

the other to impart movement to the ball 52 in one direction or theother along the path 1| (Figure 5) and through the ball and socket joint5!, 52 (Figure 2), the shaft M will be reciprocated and oscillated inorder to impart movement along a rectangular path to the actuator teeth.

The control for determining whether the registration in the revolutionscounter is to be additive or subtractive is shown in Figures 9 and 10and corresponds to the construction disclosed in the aforesaid patent toFriden, No. 2,294,111, to which reference is to be had for a detailedexplanation thereof. Briefly, the control lever can be adjusted to causethe registration in the revolutions counter to be like or unlike theregistration in the accumulator. An arm 9| of the bail 32 (Figure 1) haspivotally connected thereto at 92 (Figure 9), an arm 93 urgedcounterclockwise by a spring 94 to engage a pin 95 in a notch 96 of aplate 9'! secured to a shaft 98. Shaft 98 (Figure 10) has securedthereto an arm 99 carrying a stud Hid which engages in a slot I0!(Figure 2) in the arm 83, so that when the bail 32 is rocked to adjustthe reversing gear for the accumulator to determine additive orsubtractive registration therein, the arm iii of the ball through thearm 93 rocks the shaft 98 in one direction or the other to rock the arm83 (Figure 2) to adjust the reversing gear 89, 8|. In this way thereversing gear for the revolutions counter actuator is adjusted When thereversing gear for the accumulator is adjusted, so that theregistrations in the revolutions counter are the same in sign as theregistrations in the accumulator, that is, they both add or they bothsubtract.

To obtain registrations of unlike sign in the two registers, the controllever 99 (Figure 9) is pulled forwardly to lift the pin 95 out of thenotch 96 and engage the pin {92 on the arm 93 in the notch m3 of theplate 9i, so that rocking of the arm 91 will produce rocking of theshaft 98 in the opposite direction so that the reversing gear for therevolutions counter will be adjusted to cause subtractive registrationin the revolutions counter when the accumulator reversing gear isadjusted for additive registration, and vice versa.

I claim:

1. In a revolutions counter having a series of numeral wheels, actuatingmeans therefor mounted on a shaft, a mechanism for operating saidactuating means by oscillating and reciprooating said shaft comprising acam, a follower for said cam, a ball secured to said follower and havingmovement along a substantially rectangular path during each revolutionof said cam, a socket secured to said shaft, said ball and socketserving as a motion-transmitting connection between said follower andsaid shaft, and means to revolve said earn.

2. In a revolutions counter having a series of numeral wheels, actuatingmeans therefor including a shaft having a crank arm, means mounting saidshaft for oscillation and for axial reciprocation, and means including acam device for oscillating said shaft and for reciprocating it axiallycomprising a single rotatable cam, and a follower for said cam, said cambeing contoured so as to transform rotary movement thereof to movementof a part on said follower along a substantially rectangular path duringeach revolution of said cam, and means operatively connecting said parton said follower to said crank arm for oscillating said shaft andreciprocating it axially,

3. In a revolutions counter having a series of ordinally arrangedcounter Wheels mounted for rotation selectively in additive andsubtractive directions, actuating means for said wheels including ashaft having a crank arm, means mounting said shaft for oscillation andfor axial reciprocation, and means for oscillating said shaft and forreciprocating it axially comprising a cam device including a singlereversible rotatable cam, and a follower for said cam, said cam beingcontoured so as to transform rotary movement thereof to movement of apart on said follower along a substantially rectangular path selectivelyin opposite directions according to the direction of rotation of saidcam, said path being the same for both directions of movement of saidpart therealong, and means operatively connecting said part on saidfollower to said crank arm for oscillating said shaft and reciprocatingit axially.

4. In a revolutions counter having a series of ordinally arrangednumeral wheels, operating means therefor including a support, anassembly of actuator elements carried by said support and beingrespectively cooperable with said Wheels for rotating the latter, meansmounting said support for rocking to move said elements betweenpositions in which said elements are operatively disconnected from saidnumeral wheels and positions in which said elements are operativelyconnected to said numeral wheels, said means also mounting said supportfor movements of said elements substantially perpendicularly to saidfirst-named movements thereof and tangentially to the associated Wheels,a cam device including a single rotatable cam and a single cam follower,said cam being contoured so as to transform rotary movement thereof tomovement of a part of said follower along a substantially rectangularpath during each revolution of said cam, a crank arm on said support,and means operatively coupling said part on said follower to said crankarm for rocking said support and reciprocating it axially.

JOHN L. MOODY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date Re. 13,841 Baldwin Dec. 8, 19141,400,004 Schaller Dec. 13, 1921 2,089,770 Suter et al. Aug. 10, 19372,215,263 Eichler Sept. 17, 1940 2,229,889 Friden Jan. 28, 19412,252,621 Eichler Aug. 12, 1941 2,270,573 Avery Jan. 20, 1942 2,273,237Walter Feb. 17, 1942 2,294,111 Friden Aug. 25, 1942 2,327,981 FridenAug. 31, 1943

